1 . You needn’t wear ________ uniform in ________ air-conditioned room.

A．a, an

B．a, a

C．an, a

D．/, an

2 . It’s ________ orange.

A．a

B．the

C．this

D．an

3 . —My son seldom has ________ breakfast.
—It is ________ unhealthy habit. You must ask him to change it.

A．\; an

B．the; an

C．\; a

D．the; a

5 . Our teacher asks us to write ________ article every week.

A．a

B．an

C．the

D．/

6 . Mary’s mother is ________ engineer in that factory.

A．a

B．an

C．/

D．the

7 . —We will take ________ exam tomorrow.
—Good luck to you.

A．a

B．an

C．two

D．/

8 . We are going to have ________ party on Father’s Day.

A．a

B．an

C．the

D．不填

9 . —Have you ever seen ________ China Pavilion (展馆)?
—Yes. ________ traditional one indeed.

A．a; The

B．the; A

C．a; A

D．the; The

10 . — Are you planning ________ online tour to Maoshan now?
—Yes. I think you will like ________ tour called Sunshine for All.

A．an; the

B．a; the

C．an; a

D．/; the